barrett



A. M. BARRETT.

TRUCK. APPLICATION FiLED SEPT. H, 1917.

Patented May 23, 1922.

4 SHEETSSHEET l- WITNESS;

A. M. BARRETT.

TRUCK.

APPLICATION FILED SEPT. I I 1917.

Patented May 23, 1922.

4 SHEETS-SHEET 2.

E g Hm mU IN ENT R MW 'WrrNEss nTT'Ys,

A. M. BARRETT.

TRUCK.

APPLICATION FILED SEPT. 11, 1917.

4 SHEETS-SHEET 3.

Patented May 23, 1922.

W IT NESSI XAQ 4ZWZM A. M. BARRETT.

TRUCK.

APPLICATION FILED SEPT. 11. 1911.

1,416,674. Patented May 23,1922.

4 SHEETS-SHEET 4.

ARTHUR M. BARRETT, OF WINNETKA. ILLINOIS.

TRUCK.

Specification of Letters Patent.

Patented May 23, 1922.

Application filed September 11, 1917. Serial No. 190,762.

T all w 7mm it may concern Be it known that I. An'rnnn M. BAnnn'r'r. aeitizenof the United States. and a resident of lVinnetkain the county ofCook, State of Illinois. have invented certain new and usefulImprovements in Trucks, of which the following is a specification,reference being had to the accompanying drawings.

My invention relates to trucks of the type comprising an elevating.frame which is adaptedto be raised and lowered with reference to thefixed framework so as to be capable of being usedwith a plurality ofloading platforms. It is one of the objects of my invention to provide aform and arrangement of operating parts whereby the opera tion ofraising the elevating frame can be iierformed in close quarters whetheror not the steering: and elevating lever can be operatodprecisely in thecentral longitudinally-extending; vertical plane of the truck. It is oneof the objects of my invention to provide that the elevating frame maybe raised by a succession of short strokes of the tongue or otheroperating lever when located either in the normal longitudinal po sitionrelative to the truck or at any other angle through a wide range as saidlover is moved sidewise for guiding" the truck. To this end, it is oneof the objects of my invention to provide a construction in which theoperative portion of the operating:' lever is positionedsubstantially atthe vertical axis about which the front carrying" wheels of the truckareadapted to be moved for guidinn; the truck regardless of the annularposition of such carrying wheels. it is another 1- icct of my inventionto PIQVit'lO a construction-of this type .:oniprisinr' pawland ratchetmechanism by which power is trans mitted from the operating lever to thearms or levers by which the elevating frame is raised. l; another objectof my invention to or ride construction of this type com prisinglifting; pawl and a holding pawl. together with means for lifting saidpawls out of perative position. such means being arranged to insure thelifting pawl be ing thrown out of operation before the holding pawl ismoved out of operative position. lt is another object of my invention toimprove truclzs in sundry details hereinafter pointed out. The preferredmeans by which I have accomplished my several objects are illustrated inthe drawings and are hereinafter specifically described. T hat which lbelieve to be new and desire to cover by this application is set forth.in the claims.

In the drawings:

Fig. l is a side view of my improved truck with the elevating frame inlowered pos tion, the upper end of the handle or tongue being: brokenaway; i i

Fig. 2 is a view similar to showing the elevating frame in tion;

Fig. 3 is a top or plan view of my improved truck. the handle or tonguebeing: shown in section; '7 V Fig. 4- is a vertical cross-section takensubstantially on line 4;-4t of Fig. 3;

F 5 is a perspective view of the yoke constituting the connecting meansietween the elevating frame and the fixed frame at. the rear end of thetruck;

Fig. 6 is an enlarged detail, being a. side view of the operating partsat the front end of the truck;

Fig. 7 is an enlarged detail. being substantially cross-section taken online 77 of Fig. 3; and

Fig. 8 is a vertical transverse section taken substantially on line 88of Fig. 6.

Referring" to the several fiigures of drawings in which corresponding:parts are indicated by the same reference characters.

l5'lt3 indicate the side bars of the fixed frame of t io truclr beingheld together at their forward ends by ineans of a. heavy channelironl'i (see Fig. 6). i l transverseh; extending axle l8 supportscarrying wheels l9-20 in position at the rear end of the fixed frame. Ayoke 21 is rewilubly mounted by means of arms 523 about the axle l9, iheyoke Ell being connected by means of a pi n or bolt *lwith the rear endsof the longitiidinally-extondingr bars of the elevating frame25. A. heavbar or shaft 36 is rcvoiuhly mounted upon the plate 1? at the forwardend of the truck. being supported by bearings 27 on said plate. Arms 2?are flexibly mounted upon the shaft 26. the upper ends of said arms 28being pivotally connested with the sidebars of the elevating frame bymeans of pins or bolts 29 of any suitable type. As willv be readilyunderstooc from an inspection of the drawings, when the shaft 26 ismoved in Fig. 1 so as to carry Fig. 1 but raised posithe the arms 28into the position shown in Fig. 2, the arms of the yoke 21 are likewisemoved in counterclockwise direct-ion in said Fig. 1 about the axle 18,the elevating frame 25 being raised relative to the fixed framecomprising the side bars 15l6.

As is best shown in Fig. 53, the elevating frame 25 comprises atransverse]y-extending angle iron nearits forward end, and the fixedframe comprises a transversely-extend ing bar 31 near its rear end. Thebars 30 31 are connected by the lllGllll'JQl'S 32-413 of a dash-pot orcheck-valve of any suitable type the members being pivotally connectedwith. the bars 303l so as to permit the desired freedom of movement ofthe do vating frame relative to the fixed frame. As is shown in dottedlines in l 3, the bars S0---? l are also connected by a coiled spring5%, in connec ion with the checkvalve, the spring being adapted to movethe elevating" frame downward against the ac .tion of the check-valvewhen the elevating frame is released from its elevated position with noload thereon.

As is best shown in Fig. 4:, the channel iron 17 at the front end of thetruck is provided with a sleeve member 35 rigidly con- 'nected inposition thereon for the connecthe truck revoluble The axle the sleeve35 by means of a. pin or bolt 43,

the upper end of the neck portion 42 being provided with a retainingflange or plate 4-4;. At its forward edge portion. the plate 4-4. isprovided with standards between which a steering lever or handle 4:6 ispivotally mounted by means of a pin or bolt 47. As is best shown in Fig.6, the portion of the steering lover or handle 46 adjacci'it to thepivot pin 4-7 is offset so as to permitthe handle to be lowered\Vli'llOllfcoming in contact'with the forward flange of the channel iron17. As will be readily understood. the steering lever or handle 46 canbe rai d and lowered about the pivot pin 4-? for mauigir lating thetruck as desired. and th front axle member can be shifted angular ativeto the truck through the medium of the steering lever for guiding thetruck, the arrangement being such that the steering lever can be swunglaterally through an angle of 180 or more without brin ing the standards45 into contact with the remaining operating parts mounted upon theheavy plate 17.

The operating means by which power is applied from the handle or lever46 for turning the shaft 26 for raising the elevating frame 25 relativeto the fixed frame, comprises a gear 418 fixedly mounted upon the sh aft26, such gear being in engagement with a pinion ll) fixedly mounted upona short shaft 50 which is revolubly mounted in standards 51 rising fromthe plate 17. The shaft 50 has fixedly mountedthereon between thestandards 51 a ratchet wheel 52, the arrangement being such that whenthe ratchet wheel 52 is rotated in clockwise direction in Fig. 6 theshaft 26 is turned in couiitercloclqwise direction in said figure forraising the elevating frame ll'leans is provided for rotating theratchet wheel 52 in clockwise direction in Fig. 7, comprising a rockinglever 53 which is loose ly mounted upon the shaft 50. in the con-StIllCtlOn shown, the lever 53 is in the form of a yoke with its arms onopposite sides of the ratchet wheel 52. as is best shown in Fig. 3, suchlever 58 having a pawl 54 pivotally mounted thereon by means of apin 55,the pawl 54 being adapted to engage the ratchet wheel 52. The forwardend of the rocking-lever 53 is rounded as is best shown in Figs. 6 and7, being located substantially at or in line with the vertical axisabout which the front axle member 36 is adapted to turn relative to theplate 17. The forward end of the lever 53 in this position is adapted tobe engaged by a roller 56 revolubly mounted in the lower end of thehandle or lever 46, such roller being revolubly mounted in position bymeans of a pin its will be readily understood, when the handle or lever4.6 is given a downward stroke, the roller 56 by its engagement with thelever 58 gives the lever a clockwise 1novcnaent in Fig. 7 for causing aslight counterclockwise rotation of the shaft 26 in said figure forcausing a partial raising move ment of the frame 25. Means is provided.as hereinafter described for holding the ratchet wheel against reverserotation when the pressure is withdrawn from the pawl 54 for anotheroperative stroke of the lever 41:6. The roller 56 when in its lowermostposition is located substantially at the vertical axis of the axlemember 36, whereby such roller is adapted to o iieratively engage thelever 52; in whatever angular position the lever 41:6 may stand relativeto the fixed frame of the truck. At the end of a full operative strokeof the lever 4-6, the rear end of the lever 53 is brought into contactwith the countereloclnvise direction. in Fig. 7, either for holding theelevating frame in raised position for transportation or for holdingsuch frame in partially raised position for the next succeedingoperative stroke of. the lever 16, comprises a. shaft 58 which isrevolubly mounted within a sleeve 59 which in turnv is revolubly mountedin one of the standards 27 and one of the standards 51, as is best shownin Fig. 8. As is best shown in this figure, the shaft 58 extends beyondthe ends of the sleeve 59, one end portion of the shaft 58'having abearing in the standard 51 adjacent to the pinion49. The outer end ofthe shaft 58 has fixedly mounted thereon a lever (50, the rear end ofwhich is connected by means of a coiled spring 61 with the plate 17. thespring (51 being adapted to hold the lGr 'Gl (30 and the shaft 58yieldingly turned to the limit of their motion in clockwise direction inFig. (3; The shaft 58 has fixedly. mounted thereon a dog or pawl 62 inposition to engage the ratchet wheel 52, the spring 61 serving. to holdthe pawl 62 yieldingly in engagement with the ratchet wheel 52. Inasmuchas the pawl 62 supports the entire weight of the elevating frame and itsload, I have reinforced the construction by providing lugs (33 extendingfrom the inner faces of the standards 51: for supporting the shaftimmediately adjacent to the pawl 62;

Means is provided for throwing the pawls 5 1 and 62 out of operativeposition relative to the ratchet wheel whenever it is desired to lowerthe elevating frame 25. This means comprises the sleeve 59 abovereferred to having fixedly mounted thereon an arm 64 adjacent to theouter face of one of the standards 51. The arm (3 3 is adapted, upon therotationof the sleeve 59incountercloekwise direction in Fig. '7, toengage the lower end of an arm (35 connected. with the pawl 54: forraising the pawl out of the position shown in Fig. 6 into the positionshown: in Fig. 7 out of. contact with the ratchet wheel The sleeveand'the arm (34 are nor mally held turned to the limit of their movementin clockwise direction in Fig. 7 by m arms of a spring 66 connected witha rear wardly-extending arm 67 mounted on said sleeve (see Figs. 3 and6). -Mcans is providedfor turning the sleeve 59 in counterclockwise(lllLCtiOD in Figs. 6 and 7 against the actionof the spring 66,comprising afoot lever (39 fixedly mounted on said sleeve and extending'fOlWVZlltl therefrom adjacent to the lever (30. As is best shown inFig. 3, the

foot plate 69 of the lever 68 extends laterally.

into position over the lever 60, whereby upon an xtended downward strokeof the lever 68 the lever is also moved downward against the action ofthe spring 61. By this arrangement and'construction, upon the initialdownward movement of the lever 68 against the action of the spring 66,the pawl 5 1 is moved out of engagement with the ratchet wheel 52;thereafter, in the continued downward movementof the lever 68, the lever(30 is moved downward with the lever 68 serving to throw the pawl 62also out of engagement with the ratchet wheel 52. As will be readilyunderstood, when both of the pawls 5-1 and62 are held out of engagementwith the ratchet wheel 52, the elevating frame 25 is free to movedownward against the action of the check valve 3233, either under theimpetus of the load upon the elevating frame or of the spring 34Lpositioned underneath the check-valve.

\Vhat I claim as my invention and desire to secure by Letters Patent,is-- 1; A lifting truck comprising a wheeled frame, an elevating framemounted thereon to move longitudinally andvertically, a verticallyswinging steering lever, a rocking member mounted on said wheeled frameand adapted to be directly engaged and actuated by said steering lever,and means actuated by said rocking member for raising said elevatingframe, said steering lever being arranged to swing laterallyindependently of said: rocking member meanwhile maintaining itsoperative relation tl'iereto.

2; A lifting truck comprising a wheeled frame. an elevating framecarried th'ere'y, a verticallyswingingsteering' lover, a rocking membermounted on said wheeled frame and adapted to.- be directly engaged andactuated by said steering lever, and pawl and ratchet mechanism actuatedby said, rocking member for raising said elevating frame, said steeringlever being arranged. to swing laterally independently of said rockingmember.

3. A liftingtruck comprising a wheeled frame, an elevating frame carriedthereby, a rocking levermounted on said wheeled frame, a steering leveradapted to engage andoperate said rockinglever and arranged to swinglaterally independently thereof meanwhile maintaining its operative relation thereto, and gearing operated by said rocking lever for raisingsaid elevating frame.

4. A lifting truck comprising a wheeled. frame, an elevating framecarried thereby, a rocking lever mounted on said wheeled frame, asteering lever adapted to directly engage and operate said rocking leverand arranged to swing laterally independently thereof meanwhilemaintaining its operative relation thereto, and rotating meansinormtedon said wheeled frame and operated by said rocking lever for raisingsaid elevating frame.

5. A lifting truck comprising a wheeled frame, an elevating framemounted thereon and movable longitudinally and vertically, a verticallyswinging steering lever, gearing mounted on saidwheeledframe andconnected with said elevating frame for moving the same longitudinallyand vertically, and pawl and ratchet mechanism adapted to be actuated bysaid steering lever in any steering position thereof for rotating saidgearing.

6. In a truck, the combination of a frame, an elevating frame movable upand down relative thereto, means comprising a rotary member for movingsaid elevatin frame up ward relative to said first-named frame, meanscomprising pawl and ratchet mechanism for operating said rotary member,a lever movably mounted relative to said operating means adapted to beswung later-- ally relative to said frames and adapted to have operativeengagement with said operating means in whatever angular position thelever may stand relative to the frames, a holding pawl adapted tocooperate with said ratchet for permitting successive operative strokesof said lover, a second lever adapted by a downward stroke to throw saidholding pawl out of operative position, and a third lever adapted by apartial downward stroke to throw said. operating pawl out of operativeposit-ion and adapted there after by a continued downward stroke tocause a downward stroke of said second lever for throwing said holdingpawl out of operative position.

7. in a truck, the combination of a frame, an elevating frame movable upand down relative thereto, means comprising a rotary member for movingsaid elevating frame upward relative to said first-named frame, meanscomprising pawl and ratchet mecha nism for operating said rotary member,a lever movably mounted relative to said operating means adapted to beswung laterally relative to said frames and adapted to have operativeengagement with said operating means in whatever angular position thelever may stand relative to the frames, a holding pawl adapted tocooperate with said ratchet for permitting successive operative strokesof said lever, a transverselyextending sleeve revolubly mounted on saidfirst-named frame, a second lever for rotating said sleeve, an armprojecting from said sleeve adapted upon a downward stroke of saidsecond lever to throw said operating pawl out of operative position, andother means actuated thereafter by a continued downward stroke of saidsecond lever for throwing said holding pawl out of operative position.

8. lln a truck, the combination of a frame, an elevating frame movableup and down relative thereto, means comprising a rotary member formoving said elevating frame upward relative to said lirst-named frame,means comprising pawl and ratchet mechanism for operating said rotarymember, a lever movably mounted relative to said. operating meansadapted to be swung laterally relative to said frames and adapted tohave operative engagement with said operating means in whatever angularposition the lever may stand relative to the frames, atransversely-extending sleeve revolubly mounted on said first-namedframe, a second lever for rotating said sleeve, an arm projecting fromsaid sleeve adapted upon a downward stroke of said second lever to throwsaid operating pawl out of operative position, a shaft extending throughsaid sleeve, a pawl fixedly mounted on said shaft adapted to engage saidratchet for holding it -against reverse rotation for permittingsuccessive operative strokes of said lirst-named lever, and a thirdlever fixedly mounted on said shaft and adapted to be engaged by saidsecond lever for throwing said holding pawl out of operative positionupon a continued downward stroke of said second lever after saidoperating pawl has been thrown out of operative position.

9. In a truck, the combination of a main frame, an elevating framemovable up and down relative thereto, means comprising a rotary membermounted. on said main frame for moving said elevating frame upwardrelative to said first-named frame, a ratchet adapted to revolve withsaid rotary member, a lever pivotally mounted on the axis about whichsaid ratchet rotates, a pawl movably mounted on said lever in positionfor operatively engaging said ratchet, and a second lever movablymounted relative to said operating means adapted to be swung laterallyrelative to said frames and adapted to have operative engagement withsaid. firstnained lever for raising said elevating frame in whateverangular position said second lever may stand relative to said frames.

10. In a truck, the combination of a frame, an elevatingframe movable upand down relative thereto, a shaft, moans actuated by the rotation ofsaid shaft in one direction for raising said elevating frame, a ratchetfixedly mounted on said shaft, a yoke lever having its arms mounted onsaid shaft on opposite sides of said ratchet, a pawl movably mounted onsaid yoke lever in position to engage said ratchet, and a second levermovably mounted. relative to said yoke lever ad apted to be swunglaterally relative to said frames and adapted to have operatireengagement with said yoke lever for raising said elevating frame inwhatever angula r position said second lever may stand relative to saidframes.

ll. In. a truck, the combination of a frame, an elevating frame movableup and down relative thereto, a shaft, means actu ated by the rotationof said shaft in. one direction for raising said elevating frame, aratchet fixedly mounted on said shaft, a yoke lever having arms mountedon said shaft on opposite sides of said ratchet, a

pawl movably mounted on said yoke lever in position to engage saidratchet, a second lever movably mounted relative to said yoke leveradapted to be swung laterally relative to said frames and adapted tohave operative engagement with said yoke lever for raising saidelevating frame in Whatever angular position said second lever may standrelative to said frames, and means for limiting the stroke of said yokelever Wl1616- by said two levers are prevented from moving out ofoperative position relative to each other.

ARTHUR M. BARRETT.

